diff --git a/CHANGES.rst b/CHANGES.rst
index 1a7f3c0466c..91e0eb8f00e 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,6 +4,25 @@
 Changelog
 =========
 
+Version 21.1.1
+==============
+
+*Released 2024-04-15*
+
+This is the technical changelog for version 21.1.1. More elaborate release notes can be found in the news channel `@pythontelegrambotchannel <https://t.me/pythontelegrambotchannel>`__.
+
+Bug Fixes
+---------
+
+-  Fix Bug With Parameter ``message_thread_id`` of ``Message.reply_*`` (:pr:`4207` closes :issue:`4205`)
+
+Minor Changes
+-------------
+
+-  Remove Deprecation Warning in ``JobQueue.run_daily`` (:pr:`4206` by `@Konano <https://github.com/Konano>`__)
+-  Fix Annotation of ``EncryptedCredentials.decrypted_secret`` (:pr:`4199` by `@marinelay <https://github.com/marinelay>`__ closes :issue:`4198`)
+
+
 Version 21.1
 ==============
 
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 372d0c81581..92388805993 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -20,9 +20,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = "21.1"  # telegram.__version__[:3]
+version = "21.1.1"  # telegram.__version__[:3]
 # The full version, including alpha/beta/rc tags.
-release = "21.1"  # telegram.__version__
+release = "21.1.1"  # telegram.__version__
 
 # If your documentation needs a minimal Sphinx version, state it here.
 needs_sphinx = "6.1.3"
diff --git a/telegram/_version.py b/telegram/_version.py
index fd81c535668..bc75598cc1a 100644
--- a/telegram/_version.py
+++ b/telegram/_version.py
@@ -51,7 +51,7 @@ def __str__(self) -> str:
 
 
 __version_info__: Final[Version] = Version(
-    major=21, minor=1, micro=0, releaselevel="final", serial=0
+    major=21, minor=1, micro=1, releaselevel="final", serial=0
 )
 __version__: Final[str] = str(__version_info__)